Reciprocating piston pressure priming device



Nov. 3, 1953 w. P. ROBERG RECIPROCATING PISTON PRESSURE PRIMING DEVICE Filed Aug. 29, 1950 INVENTOR.

% radii/5%? By I 1 7a Patented Nov. 3, 1953 UNITED STATES {PATENT OFFICE RECIPROCATING PISTON PRESSURE PRIMING DEVICE Wilfred P. Roberg, Springfield, Mass.

Application August 29, 1950, Serial No. 182,093

,This invention relates to pressure priming apparatus and is directed more particularly to apparatus for delivering fuel under pressure to diesel engines and the like for priming the same.

The principal objects of the invention are directed to the provision of unitary apparatus for delivering fuel under pressure to a diesel engine for priming purposes.

Diesel engines are not considered self priming and considerable difficulty is experienced in starting them.

The device of the invention is self contained so as to be portable and it is readily and easily connected between a fuel supply and the fuel intake of the diesel engine for delivering fuel thereto to facilitate starting of the engine.

With the foregoing and various other novel features and advantages and other objects of my invention as will become more apparent as the description proceeds, the invention consists in certain novel features of construction and in the combination and arrangement of parts as will hereinafter be more particularly pointed out in the claim hereunto annexed and more fully described and referred to in connection with the accompanying drawings wherein:

The figure is a side elevational view of pressure apparatus embodying the novel features of the invention.

A body 2 is provided which has an elongated bore 4. Opposite inlet and discharge ends of the said bore may be threaded, as at 6 and 6 for connections between a fuel supply and the intake of a diesel engine.

Spaced transverse walls 8 and I are provided in the bore which have openings I2 and I4 therethrough. Valves i6 and i8 are carried by arms and 22 which are pivoted at 24 and 26 in the body.

The valves seat on seats around the openings, as shown, and assume that position as pressure is applied thereto from the right hand end of the body as viewed in the figure of the drawing.

Caps 28 and 30 are in screw threaded engagement with neck portions 32 and 34 of the body. Screws 36 and 38 are in screw threaded engagement with the body, and are removable to facilitate access to the valves.

A vertical cylinder 40 extends upwardly from the body 2 and is in communication with the bore 4 of said body, as shown.

A piston 42 is reciprocable up and down in the cylinder and has a rod 44 extending upwardly therefrom and through a stuffing box. The said stuffing box may include a gland 46 bearing on 1 Claim. (-01. 103-153) the upper side of packing in a bore 48 at the upper end of the cylinder. A cap 50 is in screw threaded engagement with the upper end of the cylinder and bears on the gland 46.

An operating lever 52 is provided which is pivotally connected at 54 to the upper end of the piston rod 44 and an end of the lever is pivotally connected at 56 to a rod end 58.

A rod end 60 is pivoted at B2 to an arm 64 extending outwardly from the cylinder 40 and this rod end 60 and the rod end 58 are in screw threaded engagement with an intermediate adjusting and connecting member 66. A pressure gauge represented by 10 is connected by a pipe 12 to the body 2 and is in communication with the bore thereof.

In operation the right hand end of the body is connected to the intake of a diesel engine and the left hand end is connected to a fuel supply.

The piston 42 is reciprocated up and down in the cylinder and fuel is drawn into the cylinder on upward movements of the piston. The valve l6 swings from off its seat during upward movements of the piston and the suction action urges the valve I8 onto its seat.

As the piston moves downwardly the fuel in the bore and cylinder is displaced and pressure created thereby acts on and holds valve l6 against its seat while lifting valve l8 so that fuel is discharged under pressure to the diesel engine to which the device is connected. The pressure gauge indicates the pressure of the fuel.

The invention may be embodied in other specific forms without departing from the essential characteristics thereof. Hence, the present embodiments are therefore to be considered in all respects merely as being illustrative and not as being restrictive, the scope of the invention being indicated by the appended claim rather than by the foregoing description, and all modifications and variations as fall within the meaning and purview and range of equivalency of the appended claim are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the United States is:

A unitary pressure priming device for delivering liquid under pressure comprising, an elongated unitary body having a bore extending therethrough from a rear inlet end to a forward outlet end aligned therewith, a cylinder integral with said body extending upwardly therefrom at right angles thereto and having a piston bore in communication with the bore of said body, a rear transverse wall extending across the bore of said body between the inlet end of said body and a side of said cylinder adjacent the inlet end, a forward transverse wall extending across the bore of the body between said outlet end of said body and a side of said cylinder adjacent the outlet end, said transverse walls provided with openings therethrough, valve means forwardly of said transverse walls in the bore of said body and pivotal connections between said valve means and body for swinging of said valve means over the openings, hollow necks extending upwardly from said body in communication with the bore thereof over said valve means and having open. upper ends, caps removably secured to upper ends of said hollow necks, a piston reciprocable up and down in the bore of said cylinder having a :rod extending upwardly therefrom, a projection iextending from a side of said cylinder, a lever pivoted intermediate opposite ends thereof to the upper end of said rod, a member pivotally conheatedat opposite ends to said projection and an 'end of said lever, said transverse walls .inthe 4 bore of said body and the openings therethrough disposed whereby the axes of said openings are angularly disposed to intersect the longitudinal axis of the bore of said body, said valve means including arms pivoted to said body carryng valves.

WILFRED P. ROBERG.

References Cited in the :file of patent UNITED STATES PATENTS Number Name Date 1%,730 LMarshall Jan. 9, 1923 1,512,045 Scott Feb. 9, 1926 1,610,174 Smith Dec. 7, 1926 1,611,022 'Gorman Dec. 14, 1926 1,1393338 Johnson Dec. 17, 1929 1,904,486 Longenecker Apr. 18, 1933 1,975,583 Latham Oct. 2, 1934 2,083,854 McGee ..June 15, 1937 21185234 'Rupp "May 24', 1938 

